1. Institut für Medizinische Virologie, Klinikum der Goethe-Universität, Frankfurt am Main 60596, Germany
2. Centre for Molecular Processing and School of Biosciences, University of Kent, Canterbury CT2 7NJ, UK
3. Current address: Centre for Molecular Processing and School of Biosciences, University of Kent, Canterbury CT2 7NJ, UK
4. Institute for Pharmaceutical Chemistry, Goethe-University, Frankfurt am Main 60438, Germany
5. Medway School of Pharmacy, Universities of Kent and Greenwich in Medway, Chatham, Kent ME4 4TB, UK
6. School of Life Sciences, University of Sussex, Brighton BN1 9QG, UK